<?php

/**
 * XMPPHP: The PHP XMPP Library
 * Copyright (C) 2008  Nathanael C. Fritz
 * This file is part of SleekXMPP.
 * 
 * XMPPHP is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * XMPPHP is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with XMPPHP; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   xmpphp 
 * @package	XMPPHP
 * @author	 Nathanael C. Fritz <JID: fritzy@netflint.net>
 * @author	 Stephan Wentz <JID: stephan@jabber.wentz.it>
 * @author	 Michael Garvin <JID: gar@netflint.net>
 * @copyright  2008 Nathanael C. Fritz
 */

/**
 * XMPPHP Log
 * 
 * @package	XMPPHP
 * @author	 Nathanael C. Fritz <JID: fritzy@netflint.net>
 * @author	 Stephan Wentz <JID: stephan@jabber.wentz.it>
 * @author	 Michael Garvin <JID: gar@netflint.net>
 * @copyright  2008 Nathanael C. Fritz
 * @version	$Id$
 */
class XMPPHP_Log {

  const LEVEL_ERROR = 0;
  const LEVEL_WARNING = 1;
  const LEVEL_INFO = 2;
  const LEVEL_DEBUG = 3;
  const LEVEL_VERBOSE = 4;

  /**
   * @var array
   */
  protected $data = array();

  /**
   * @var array
   */
  protected $names = array('ERROR', 'WARNING', 'INFO', 'DEBUG', 'VERBOSE');

  /**
   * @var integer
   */
  protected $runlevel;

  /**
   * @var boolean
   */
  protected $printout;

  /**
   * Constructor
   *
   * @param boolean $printout
   * @param string  $runlevel
   */
  public function __construct($printout = false, $runlevel = self::LEVEL_INFO) {
    $this->printout = (boolean) $printout;
    $this->runlevel = (int) $runlevel;
  }

  /**
   * Add a message to the log data array
   * If printout in this instance is set to true, directly output the message
   *
   * @param string  $msg
   * @param integer $runlevel
   */
  public function log($msg, $runlevel = self::LEVEL_INFO) {
    $time = time();
    #$this->data[] = array($this->runlevel, $msg, $time);
    if ($this->printout and $runlevel <= $this->runlevel) {
      $this->writeLine($msg, $runlevel, $time);
    }
  }

  /**
   * Output the complete log.
   * Log will be cleared if $clear = true
   *
   * @param boolean $clear
   * @param integer $runlevel
   */
  public function printout($clear = true, $runlevel = null) {
    if ($runlevel === null) {
      $runlevel = $this->runlevel;
    }
    foreach ($this->data as $data) {
      if ($runlevel <= $data[0]) {
        $this->writeLine($data[1], $runlevel, $data[2]);
      }
    }
    if ($clear) {
      $this->data = array();
    }
  }

  protected function writeLine($msg, $runlevel, $time) {
    //echo date('Y-m-d H:i:s', $time)." [".$this->names[$runlevel]."]: ".$msg."\n";
    echo $time . " [" . $this->names[$runlevel] . "]: " . $msg . "\n";
    flush();
  }

}
